To find it, you'll need to:
1. Identify your engine: Check your vehicle's paperwork or the sticker inside the driver's side doorjamb to determine the engine size (e.g., 2.2L, 4.3L).
2. Consult a repair manual: A Haynes or Chilton repair manual specific to your year and engine will show you the exact location of the O2 sensors with diagrams. This is the most reliable method.
3. Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to look up your vehicle and see diagrams showing the O2 sensor locations. Enter your year, make, model, and engine.
General Location Hints (but these are NOT guaranteed to be accurate for your specific engine):
* Upstream O2 Sensor: Usually located in the exhaust manifold or very close to it. It's often before the catalytic converter.
* Downstream O2 Sensor: Usually located in the exhaust pipe after the catalytic converter.
Important Note: Working on your exhaust system requires caution. The exhaust system gets very hot, even after the engine has been off for a while. Allow it to cool completely before working on it. Also, be aware of sharp edges and potential burns.
